Frequencies for first 10,000 rows of p7 variable in miper dataset :

         p7 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,786       67.86       67.86
          1 |         26        0.26       68.12
          2 |         65        0.65       68.77
          3 |         70        0.70       69.47
          4 |         63        0.63       70.10
          5 |         81        0.81       70.91
          6 |         81        0.81       71.72
          7 |         92        0.92       72.64
          8 |         87        0.87       73.51
          9 |        105        1.05       74.56
         10 |        129        1.29       75.85
         11 |        122        1.22       77.07
         12 |        128        1.28       78.35
         13 |        123        1.23       79.58
         14 |        155        1.55       81.13
         15 |        152        1.52       82.65
         16 |        163        1.63       84.28
         17 |        148        1.48       85.76
         18 |        153        1.53       87.29
         19 |        131        1.31       88.60
         20 |        147        1.47       90.07
         21 |        133        1.33       91.40
         22 |        114        1.14       92.54
         23 |         86        0.86       93.40
         24 |         96        0.96       94.36
         25 |         87        0.87       95.23
         26 |         74        0.74       95.97
         27 |         58        0.58       96.55
         28 |         58        0.58       97.13
         29 |         46        0.46       97.59
         30 |         48        0.48       98.07
         31 |         36        0.36       98.43
         32 |         23        0.23       98.66
         33 |         29        0.29       98.95
         34 |         19        0.19       99.14
         35 |          8        0.08       99.22
         36 |         11        0.11       99.33
         37 |         13        0.13       99.46
         38 |         13        0.13       99.59
         39 |          7        0.07       99.66
         40 |          4        0.04       99.70
         41 |          5        0.05       99.75
         42 |          4        0.04       99.79
         43 |          5        0.05       99.84
         44 |          1        0.01       99.85
         45 |          4        0.04       99.89
         46 |          2        0.02       99.91
         47 |          4        0.04       99.95
         48 |          1        0.01       99.96
         49 |          1        0.01       99.97
         54 |          1        0.01       99.98
         56 |          1        0.01       99.99
         88 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2016